GB1515486A - Multiple beam receiving array signal processor - Google Patents

Multiple beam receiving array signal processor

Info

Publication number
GB1515486A
GB1515486A GB968577A GB968577A GB1515486A GB 1515486 A GB1515486 A GB 1515486A GB 968577 A GB968577 A GB 968577A GB 968577 A GB968577 A GB 968577A GB 1515486 A GB1515486 A GB 1515486A
Authority
GB
United Kingdom
Prior art keywords
sequence
signals
sampled
outputs
taps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB968577A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB968577A priority Critical patent/GB1515486A/en
Priority to DE19782808983 priority patent/DE2808983A1/en
Priority to FR7806399A priority patent/FR2383452A1/en
Publication of GB1515486A publication Critical patent/GB1515486A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/42—Simultaneous measurement of distance and other co-ordinates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
    • H01Q25/008—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device lens fed multibeam arrays

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

1515486 Radar; direction finding STANDARD TELEPHONES & CABLES Ltd 8 March 1977 09685/77 Heading H4P A signal processor for a multiple beam receiv ing antenna array in which the outputs from a linear array of (N-I) spaced aerial elements are separately mixed in (N - 1) mixers with a common radio frequency offset from the radio frequency of the signals received by the array to produce intermediate frequency signals and the mixed signals are all sampled periodically and simultaneously, comprises a surface acoustic wave delay line RO having its taps interconnected with the respective sampled element signals so that the sampled signals are transferred serially to a phase weighted transversal filter TF in a sequence which is a reordering of the linear sequence of aerial elements according to the prime number transform algorithm p=g<SP>i</SP> modulo N where i is the original sequence, p is the reordered sequence, and g is a socalled primitive root of a prime number N, the filter having a tapped delay line with the outputs of successive taps being individually phase weighted corresponding to the reordered sequence of the sampled signals, the outputs of the phase weighted taps being summed to effect a convolution of the input signal sequence and the phase weighting sequence. The signals, in prime order sequence are mixed with the oscillator LO 2 frequency and fed to a fast A/D converter before a final serial to parallel conversion and reordering back to the original linear sequence.
GB968577A 1977-03-08 1977-03-08 Multiple beam receiving array signal processor Expired GB1515486A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB968577A GB1515486A (en) 1977-03-08 1977-03-08 Multiple beam receiving array signal processor
DE19782808983 DE2808983A1 (en) 1977-03-08 1978-03-02 SIGNAL PROCESSING DEVICE FOR RADAR DEVICES
FR7806399A FR2383452A1 (en) 1977-03-08 1978-03-07 SIGNAL PROCESSING DEVICE ASSOCIATED WITH A MULTI-BEAM NETWORK ANTENNA

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB968577A GB1515486A (en) 1977-03-08 1977-03-08 Multiple beam receiving array signal processor

Publications (1)

Publication Number Publication Date
GB1515486A true GB1515486A (en) 1978-06-28

Family

ID=9876793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB968577A Expired GB1515486A (en) 1977-03-08 1977-03-08 Multiple beam receiving array signal processor

Country Status (3)

Country Link
DE (1) DE2808983A1 (en)
FR (1) FR2383452A1 (en)
GB (1) GB1515486A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2765484C2 (en) * 2021-04-13 2022-01-31 Акционерное общество "Научно-исследовательский институт "Вектор" (АО "НИИ "Вектор") Method for direction finding and device implementing thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483561A (en) * 1968-07-23 1969-12-09 Us Air Force Direction finding antenna
FR2061503B1 (en) * 1969-02-19 1974-05-24 Thomson Csf
GB1434638A (en) * 1973-11-27 1976-05-05 Standard Telephones Cables Ltd Radio direction finding equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2765484C2 (en) * 2021-04-13 2022-01-31 Акционерное общество "Научно-исследовательский институт "Вектор" (АО "НИИ "Вектор") Method for direction finding and device implementing thereof

Also Published As

Publication number Publication date
FR2383452B1 (en) 1984-01-27
FR2383452A1 (en) 1978-10-06
DE2808983A1 (en) 1978-09-14

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee